Improvement in churn-lids



G. L. FARMER.

Churn-Lid.

No. 211,980. Pafe'nted Feb. 4,1879

GEORGE L. FARMER, OF ROCKFORD, ILLINOIS.

IMPROVEMENT IN CHURN-LIDS.

Specification forming part of Letters Patent No. 211,980, dated February4, 1879 application filed December 6, 1878.

To all whom it may concern Be it known that I, GEORGE L. FARMER, of thecity of Rockford, in the county of Winnebagoand State of Illinois, haveinvented a new and useful Improvement in Ohurn-Lids, of which thefollowing is a specification:

This invention relates to fixing removable lids to vesselssuch as churnsor other vesselsrequirin'g a close-fittin g removable lid.

The object of this invention is to provide a close-fittin g removablelid for vessels employed to contain substances requiring such lids 5 andin this instance I shall describe my improvement as employed in anend-over-end revolving churn, employed in churning milk to producebutter.

In the drawings, Figure 1 is an isometrical representation of aremovable lid, in connection with the fixed ring portion of the head ofa vessel. Fig. 2 is a vertical central section, cut centrally lengthwisethrough the crossarms of the metallic ring of the removable lid, and onthe same plane through the other parts. Fig. 3 is a vertical centralsection on the same plane as Fig. 2, and is designed to represent aslightly-modified form of my improvement.

In the figures, A is designed to represent the fixed portion of the headof avessel, which in this instance is of metal, in disk-ring form, andhaving its outer edge adapted to enter the groove cut in the chine ofthe vessel, in the same manner as heads of vessels are received in thegroove cut in their chines. This ring-head is provided with a centralopening, around which, onthe outside of the head, rises a rim, (1,projecting above the plane of the ring-head. This ring-head is providedwith outward-projecting ears I), 'which rise from its outer face,outside of the rim a, at proper intervals, on a circular line betweenits inner and outer edges. These ears are rabbeted on their verticalinner corners, as at 0, having the outer portion overlapping therabbeted portion, forming hooking ears adapted to receive a bolt-lockingdevice to secure a removable lid in place on the ring-head.

d represents a metallic ring, of angle-iron form, in cross-section, andis provided with cross-arms c. This angle-iron rim with crossarmsreceives the wooden lid f within the depending outer rim of the metallicangle-iron ring. The wooden lid f is rabbeted on its under face and.outer edge, forming a groove, in which is fitted a packing-ring, g, madeof any suitable material. This removable lid is of such relative size asto be freely received be tween the ears 0, which rise from the fixedring-head, and when placed on the open ringhead the packing-ring willrest on the outward uprising ring, a, on the fixed ring-head.

h are staple-formed loops that rise from the outer portion of thecross-arms e, or from the metallic ring (I, with which they connect, andare adapted to freely receive the lever-clamping arms 1 Theselever-clamping arms are of the bent form represented in the drawings,the inner ends of which rise above the plane of the lid, and areconnected by hinge-joint to a central spider, k. lis a screw-bolt, whichis passedupwardthroughthe centerofthewooden lid and through the centerof the metallic cross-arms, above which it is fitted with a screw-nut,m, which fixes the wooden lid in the metallic ring of the removable lid.The screw-bolt m extends from the lid upward. through the center of thespider 7c, and is fitted with a screw-nut, a, journaled to revolve inthe spider, and held in place by a collar on the under side of thespider. The upper por- I tion of this screw-nut n is provided with alever crank-arm, 0, by means of which the screwnut can be made to ascendor descend on the screw-bolt. With this construction of the parts, andby means of the crank-arm, the spider is made to ascend on thescrew-bolt, which movement will depress the outer ends of thelever-clamping arms, and when sufiiciently depressed the lid is then putin place on the ring-head, between the rabbeted ears, and turned, inthis instance, to the left until the outer ends of the lever-bolts passinto the rabbeted ears under their hooking outer ends. Then by means ofthe crank-arm the spider is depressed, which carries with it the innerends of the lever-clamping arms, in which movement the angle formed onthe outer portion of the lever-arms rests on the outer surface of themetallic ring of the lid, and causes the outer portion of the lever-armsto rise in con tact with the hooking head of the rabbeted ears, and thecontinued downward movement of the spider will force the lid in closecontact with the ring-head to prevent leakage. By reversing thesemovements the lid may be quickly removed.

This removable lid is especially adapted to churns of that class knownas the end-oven end revolving churn, in which the vessel is usually ofthe barrel form, suspended in a frame on trunnions projecting from itsopposite sides about midway of its length.

In Fig. 3, I have represented the fixed disk ring-head and the removablelid in its main features, substantially the same as hereinbeforedescribed but in this figure I have omitted the operating crank arm 0,and have substituted in its stead a lever-arm, p, fitted with aneccentric head journaled on the trunnionformed projecting ends of thescrew-nut s in such a manner as to permit it to be thrown into theposition of the dotted lines, which will permit the spider to rise andcarry with it the inner ends of the lever-bolts, which will permit thelid to be removed. In this modification I employ a spring, (shown at t,)which surrounds the screw-bolt between the lid and the spider, theaction of which will hold the spider pressed against the eccentric. Thismodification is of such construction that the free end of thelever-arm 1) may be employed as a wrench to be moved in a plane parallelwith the lid, to turn the screw-nut 8 up or down on the screw-bolt, toregulate the acting force of the eccentric in depressing the spider.

I claim as my invention The combination, with the removable lid

